780723983 has 8 divisors (see below), whose sum is σ = 877335648. Its totient is φ = 689334624.

The previous prime is 780723961. The next prime is 780724019. The reversal of 780723983 is 389327087.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 780723983 - 2¹⁰ = 780722959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780723913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1305260 + ... + 1305857.

It is an arithmetic number, because the mean of its divisors is an integer number (109666956).

Almost surely, 2^780723983 is an apocalyptic number.

780723983 is a deficient number, since it is larger than the sum of its proper divisors (96611665).

780723983 is a wasteful number, since it uses less digits than its factorization.

780723983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2611153.

The product of its (nonzero) digits is 508032, while the sum is 47.

The square root of 780723983 is about 27941.4384561711. The cubic root of 780723983 is about 920.8011228434.

The spelling of 780723983 in words is "seven hundred eighty million, seven hundred twenty-three thousand, nine hundred eighty-three".